1. S. Abiteboul and C. Beeri. On the power of query languages for complex objects. The VLDB Journal, 1994. to appear.
2. S. Abiteboul, R. Hull, and V. Vianu. Database Theory From A to F. Addison-Wesley, 1994. to appear.
3. M. Atkinson, P. Richard, and P. Trinder. Bulk types for large scale programming. In Proc. 1st Int'l East-West Database Workshop on Next Generation Information System Technology, Kiev, USSR, Oct. 9–12, 1990, volume 504 of LNCS, pages 229–250. Springer-Verlag, 1991.
4. V. Breazau-Tannen, P. Buneman, and S. Naqvi. Structural recursion as a query language. In P. Kanellakis and J. Schmidt, editors, Proc. 3rd Int'l Workshop on Database Programming Languages, Nafplion, Greece, Aug. 27–30, 1991, pages 9–19. Morgan Kaufmann Publishers, 1992.
5. V. Breazu-Tannen, P. Buneman, and L. Wong. Naturally embedded query languages. In Proc. 4'th Int'l Conference on Database Theory, Berlin, Germany, volume 646 of LNCS, pages 140–154. Springer-Verlag, Oct. 1992.